An outbreak of a pathogen-caused illness occurs in a small neighborhood in a big city. Which of the following should investigators confirm first

Question

blues · Answer

Please provide complete info if you'd like assistance. We can't help you decide among your options if you don't tell us what the options are.

anonymous · Answer

a. The water supply is not contaminated.
b. The illness is not carried by insects.
c. The infected people's homes are clean.
d. The infected people are not genetically similar

blues · Answer

Which do you think it is, or isn't? If you're not sure how to approach a multiple choice problem, process of elimination is a good place to start.